ITU-T Specification and Description Language (SDL)

The OpenSource tools Humboldt-Universität zu Berlin "SITE - SDL Integrated Tool Environment)" for Linux, Windows.

The affordable commercial EDrawSoft EDraw Max for Windows - “SDL Diagram Software”.

The software University of Bremen, Faculty 3 - Computer Science "Graphical Development Process Assistant" ( GDPA ), for use with the “V-Modell XT”.

Cinderella ApS "Cinderella SDL".

The commercial IBM Rational SDL Suite.

Paul Herber's Sandrila Ltd "Sandrila SDL for SDL-2000, MSC-2000, TTCN, URN, UML and UML2".

The commercial EventHelix "EventStudio System Designer" for Windows - free 45 days trial version. It can be used to design call flow diagrams ( e.g. an “ISUP to ISUP call” ), which is not part of the SDL language, but which is used in system design for telecommuncations.

SDL Forum.

Emmanuel Gaudin "Specification & Description Language - Real Time ( SDL-RT )".

University of Applied Science HES-S, Laboratoire d'informatique industrielle "Telelogic - Specification and Description Language (SDL)" ( PDF ).

[Belina Hogrefe "SDL Forum Society".

SINTEF "TIMe : The Integrated Method" → SINTEF report “Using UML for architectual design of SDL systems”.

EN.Wikipedia "Specification and Description Language", DE.Wikipedia "Specification and Description Language".

LinkedIn "SDL Users".